package day04;

import java.util.Scanner;

public class TuoZhan {
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        int num=sc.nextInt();
        if(num==0) {
            System.out.println("0");
        }else if(num>0){
            System.out.println("+");
        }else{
            System.out.println("-");
        }


    }
}
